Archana Vasanthakumar

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The gut bacterial community of a bark beetle, the pine engraver Ips pini (Say), was characterized using culture-dependent and culture-independent methods. Bacteria from individual guts of larvae, pupae and adults were cultured and DNA was extracted from samples of pooled larval guts. Analysis of 16S rRNA gene sequences amplified directly from the gut(More)
We characterized gut microbial communities in the emerald ash borer, Agrilus planipennis Fairmaire, an invasive phloem-feeding and wood-boring beetle that has caused extensive mortality to urban and forest ash trees. Analyses included both 16S rRNA gene-based and culture-based approaches. We estimated that the emerald ash borer gut harbors 44, 71, and 49(More)
We report the Þrst study of gut-associated bacteria of bark beetles using both culturedependent and culture-independent methods. These insects are major pests of pine trees but also contribute to important ecological functions such as nutrient cycling. We found members of the and -Proteobacteria and Firmicutes in larvae of the southern pine beetle,(More)
Disorders of iron metabolism account for some of the most common human diseases. Cellular iron homeostasis is maintained by iron regulatory proteins (IRP)-1 and 2 through their binding to cis-regulatory iron-responsive elements (IREs) in target mRNAs. Mouse models with IRP deficiency have yielded valuable insights into iron biology, but the physiological(More)
Most, and perhaps all, multicellular organisms house symbiotic microorganisms. Recent research identified a number of ways in which symbionts are critical to the success of various insects, yet we know very little about the symbiotic associations of the major invasive species. The information we do have is largely limited to two specific types of(More)
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